Phosphorus oxychloride → 4-Chloro-2-(2-ethylsulfanylphenyl)-7-trifluoromethylquinazoline

HRID 521659Notes

Reaction equation

[CH2:1]([S:3][C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[C:10]1[NH:19][C:18](=O)[C:17]2[C:12](=[CH:13][C:14]([C:21]([F:24])([F:23])[F:22])=[CH:15][CH:16]=2)[N:11]=1)[CH3:2].P(Cl)(Cl)([Cl:27])=O.C(N(CC)C(C)C)(C)C.C(=O)(O)[O-].[Na+]>C1(C)C=CC=CC=1>[Cl:27][C:18]1[C:17]2[C:12](=[CH:13][C:14]([C:21]([F:24])([F:23])[F:22])=[CH:15][CH:16]=2)[N:11]=[C:10]([C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[S:3][CH2:1][CH3:2])[N:19]=1

Participants

Conditions

Temperature: 90 °C

Procedure

A mixture of 1.29 g of 2-(2-ethylsulfanylphenyl)-7-trifluoromethyl-3H-quinazolin-4-one, 0.38 ml of phosphorus oxychloride, 523 mg of N,N-diisopropylethylamine and 20 ml of toluene was stirred at 90° C. for 2 hours. A saturated aqueous sodium bicarbonate solution was added to the cooled reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and dried over anhydrous magnesium sulfate, then concentrated under reduced pressure to obtain 1.23 g of 4-chloro-2-(2-ethylsulfanylphenyl)-7-trifluoromethylquinazoline (Compound of Present Invention 4).

Workup

extractionthe mixture was extracted with ethyl acetate
washThe organic layer was washed with water
dry with materialdried over anhydrous magnesium sulfate
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-e608ae7e26384aeb87ae9a48fc434363
Source dataset: uspto-grants-2016_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09328121B1

Reaction notes

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